System.AccessViolationException was unhandled
Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source=Microsoft.Xna.Framework
StackTrace:
at Microsoft.Xna.Framework.Audio.AudioCallbackDispatcher.IsEventRegistered(EventType type)
at Microsoft.Xna.Framework.Audio.AudioCallbackDispatcher.UnregisterEvent(EventType type)
at Microsoft.Xna.Framework.Audio.KernelMicrophone.ShutdownCaptureEngine()
at Microsoft.Xna.Framework.Audio.MicrophoneUnsafeNativeMethods.ShutdownCaptureEngine()
at Microsoft.Xna.Framework.Audio.AudioRendererShutdownHandler.AppExitingEventHandler(Object sender, EventArgs args)
InnerException:

Every now and then, I get a System.AccessViolationException when closing the program and all the information I'm given is above. I suppose it isn't really an issue as if the program crashes when I'm closing it, so it probably isn't the absolute end of the world (compared to it crashing during run time). But I still would prefer for this to not happen. Unfortunately, I don't know what's directly causing it, and I'm not sure it'd be helpful to post my audio manager classes either since the problem seems to be within the framework itself.

As the error says, you cannot really do much. That is, unless you have relevant source codes (e.g. to XNA)

Yeah, it is annoying during debugging, but the end user will probably never experience it, unlike the poor dev who quits the game three hundred times during a weekend...

I can share what helped me to reduce the occurence to a minimum - Put a 3-second wait time before the game actually exits. This, most of the time, helps and it reduced the crashing from few hundred times to few tens for me...

Some people reportedly experienced another reduction of crashes when prolonging 3 seconds to 5. Didn't work for me, but you could try. 5 seconds, for me, is way too much time to wait till I can interact with Visual Studio...